Citrix Systems has been granted a patent for methods, systems, and apparatuses that enable the discovery of dynamic path maximum transmission unit (PMTU) between a sending computing device and a receiving computing device. The patent describes a method where the sending device iteratively transmits bursts of probe packets to determine the PMTU. Once discovered, the devices can update their buffers without disruption. In multi-path scenarios, the method allows for the discovery of PMTU for each path and selection of the optimal path based on network characteristics. GlobalData’s report on Citrix Systems gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Citrix Systems, network virtualization was a key innovation area identified from patents. Citrix Systems's grant share as of September 2023 was 56%. Grant share is based on the ratio of number of grants to total number of patents.
Dynamic path maximum transmission unit (pmtu) discovery method
A recently granted patent (Publication Number: US11777865B2) describes a method for optimizing network connections between client devices and host devices. The method involves determining the minimum and maximum packet sizes based on previous packet transmissions and receptions. The client device then sends a range of packets within this size range to the host device via the network connection. The client device also determines the path maximum transmission unit (PMTU) of the network connection based on responses from the host device, indicating successful packet reception. Additional packets are then sent by the client device to the host device based on the determined PMTU.
The method also includes adjusting the size of the client device's buffer based on the PMTU, allowing for more efficient packet transmission. The buffer can be a communication stack buffer of either the presentation layer or the transport layer. The patent also mentions the possibility of adjusting the size of the host device's buffer based on the PMTU.
The determination of the minimum and maximum packet sizes can be based on the networking capabilities of the client device or a plurality of intermediary network devices involved in the network connection. The patent suggests that the initialization of data communication and the determination of the PMTU can be performed in parallel.
Another embodiment of the method involves determining the minimum and maximum packet sizes based on the networking capabilities of the client device. The client device then sends packets within this size range to the host device, determines the PMTU based on responses from the host device, and sends additional packets accordingly.
In yet another embodiment, the method involves determining the maximum packet size based on the networking capabilities of a plurality of intermediary network devices. The minimum packet size is also determined, and packets within this size range are sent to the host device. The PMTU is determined based on responses from the host device, and additional packets are sent accordingly.
Overall, this patent describes a method for optimizing network connections by dynamically adjusting packet sizes based on previous transmissions and receptions, as well as the networking capabilities of the devices involved. This can lead to more efficient data transmission and improved network performance.
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